Question: What is the Gregorian date of Kanishka's death which is possibly earlier than 1584?
Paraphrase: What is the date of Kanishka's death in the Gregorian calendar?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q312544 p:P570 ?s . ?s ps:P570 ?obj . ?s pq:P31 wd:Q26961029 }